baber/WOPTO huggingface dataset:
Patent GB-549496-A (GB)
Title: Improvements in or relating to synthetic resin adhesives
IPC: C09J5/08
Filed: 1941-05-19
Abstract: 549,496. Phenol-aldehyde, urea aldehyde ; melamine-aldehyde resins. AERO RESEARCH, Ltd., BRUYNE, N. A. DE., and HUBBARD, D. A. May 19, 1941, Nos. 6438 and 13173. [Class 2 (iii)] In uniting wood veneers and like cellulosic surfaces by means of a synthetic resin adhesive, comprising urea-formaldehyde, melamine formaldehyde thio-urea-formaldehyde or phenolformaldehyde condensation products the resin is beaten into a foam and applied as such to the surfaces. The resins may be mixed with a froth forming substance, e.g. saponin. In examples melamine-formaldehyde resin, ammonium chloride (as foam hardener) saponin and water are stirred and placed in a flask where they are beaten up with a revolving wire whisk, the beating being continued until the volume of the mixture has increased by about one and a half to two and a half times. Examples of suitable resin adhesives are (1) 1 mol. melamine and 2 mols. formaldehyde are mixed, diluted with water and boiled under reflux, a mixture of formaldehyde and water being added slowly through the reflux condenser ; after refluxing for 45 mins. the mixture is vacuum distilled to give a syrupy liquid which can be diluted with its own volume of water before precipitating the resin ; (2) 27 parts urea and 77 parts 40 per cent. formalin are mixed with a buffer solution to give a pH value of 6 ; the mixture is refluxed and sodium acetate added ; (3) 60 gs. melamine-formaldehyde syrup, 40 gs. urea formaldehyde syrup and 11.5 gs. cassava starch ; (4) An 80 per cent. solution of phenol in water is added to a mixture of formaldehyde and potassium hydroxide and the mixture refluxed and divided into products tolerating different amounts of water which are mixed in proportions giving a final water toleration of one part water to two parts resin. 10 per cent. of a 10 per cent. solution of saponin is added. The foam may be applied to the surfaces by the usual rubber rollers. Specification 551,488, [Group II] is referred to. Reference has been directed by the Comptroller to Specification 446,442.
Patent GB-995436-A (GB)
Title: Improvements in or relating to electrical transmission lines
IPC: H03K3/315
Filed: 1962-02-20
Abstract: 995,436. Tunnel diode pulse circuits; pulse signalling. J. NAGUMO. Feb. 20, 1962 [Feb. 20, 1961], No. 6492/62. Headings H3T and H4L. A transmission line is provided with monostable circuits using voltage-controlled negative resistance devices at intervals for the purpose of regenerating pulses transmitted along the line. Pulses are fed in at terminal 9 and via a coupling impedance 5/1 to each monostable circuit which comprises a tunnel diode 1, resistor 4 and inductor 3. Each circuit is biased from a D.C. source 2 so that it cannot be triggered by interfering pulses below a threshold level. When each circuit is triggered by a pulse above the threshold level, it generates a pulse of predetermined amplitude and duration and feeds it via the next coupling impedance 5/2 to the next stage. Specification 727,415 is referred to.
Patent GB-720036-A (GB)
Title: Improvements in precision belt drive arrangements
Inventor: COOLEY AUSTIN GEORGE
IPC: H04N1/14
Filed: 1952-03-13
Abstract: 720,036. Belt gearing. TIMES FACSIMILE CORPORATION. March 13, 1952. No. 6558/52. Class 80 (1). [Also in Group XL (b) ]. A driving belt 18 comprises a flat metal band having a groove 31 rolled, cut or ground therein to register with a corresponding rib on cylindrical driving and idler wheels 20, 19, and carries a number of lugs 26 which co-operate with the single-toothed ends of an arm 23 which is rotated by a synchronous motor 27, a variable-speed motor 13 being set to rotate the wheel 20 at a slightly greater speed than the synchronous speed so that the belt 18 is held back to said synchronous speed by the arm 23. The wheel 19 is free on the shaft of the synchronizing arm 23. The belt may comprise a butt-welded strip of stainless steel, phosphor bronze or beryllium copper, or may be rolled from a metal ring. The groove 31 ensures a steady movement of the belt 18 and is shown applied to a continuous recording facsimile machine wherein the belt, carrying electricallyexcited styli 14-16, traverses an electrosensitive web 10 fed by a rotating platen 12 geared to the motor 13. The web 10 is thus scanned in successive dots whose size or intensity varies, the styli preferably being spaced at distances slightly greater than the width of the web 10. A phasing mechanism 28 is operative on receipt of a phasing signal to clutch the motor to the arm 23. The lugs 26 are so-spaced that when one tooth of the arm 23 is in engagement, the other is just out of engagement. The Specification also describes a method of rolling the groove 31 into the belt by means of a pair of flanged rollers, one of which has a peripheral rib, the spacing of the flange being adjustable. Alternatively the belt may be passed through successive pairs of rollers whose flange spacings progressively increase. Specification 720,042 is referred to.
Patent GB-761487-A (GB)
Title: Improvements in or relating to pressure gauges
Inventor: APPLEBY ERNEST MARK HEDWORTH
IPC: G01L13/02
Filed: 1954-03-08
Abstract: 761,487. Differential pressure gauges. APPLEBY & IRELAND, Ltd. March 8, 1955 [March 8, 1954], No. 6719/54. Class 106 (2). A differential pressure gauge comprises two capsules 18, 19, Fig. 6, having bifurcated lugs 22, 23 on their operating faces in which are pivoted the two ends of a lever 24 having a central knife-edge portion 25 colinear with a line joining the pivots and bearing against an arm 36 secured to a rocking spindle 35 mounted at its ends for movement about its longitudinal axis in ports 31, 32, the spindle 35 being adjustable in position along that axis by screws 33, 34 so that the point of contact of the arm 36 with the knife-edge 25 may be adjusted to the neutral point where no movement occurs when equal pressure is applied to the capsules 18, 19. The operating characteristics of the capsules may be adjusted by screws 72, 73 acting on springs 68, 69 bearing on rounded faces of the lugs 22, 23. The rocking spindle 35 is provided with a lever 37, Fig. 4, pivoted at 44 to a slotted rod 43 engaging with a crosspin 42 on a bifurcated arm 41 of a rockshaft 40. The arm 40 carries a second bifurcated arm 48 connected by a link 49 to an arm 50 supported by a short flat spring attached to the frame of the instrument and a helical spring 45 also attached to the frame is secured to the lever 37 thereby normally keeping the crosspin 42 at the end of the slot in the rod 43 and eliminating back-lash. In the event of excess pressure being applied to the capsule 19 the increasing pressure of the knife-edge 25 on the arm 36 eventually overcomes the light force of the spring 45 and carries the rod 43 away from the pin 42, thereby protecting the mechanism. The rockshaft 40 bears at its lower end a quadrant 53 movable between stops 65 and driving through gears 54, 60, 61 a spindle 62 carrying the pointer. An electric buzzervibrater may be provided to obviate sticking of the indicating mechanism.
Patent GB-1183895-A (GB)
Title: Improvements in or relating to Magnetic Memory Devices
IPC: G11C11/04
Filed: 1968-02-12
Abstract: 1,183,895. Data storage apparatus. NIPPON ELECTRIC CO. Ltd. 12 Feb., 1968 [15 Feb., 1967], No. 6730/68. Heading H3B. Magnetic interference .between adjacent storage regions in a coated-wire memory is reduced by providing magnetic shielding members between adjacent drive lines. In Fig. 1, each drive line 2<SP>1</SP> is divided into three parallel portions 2 on each side of the coated wire 1. A foil 3 of soft magnetic material is arranged in a serpentine configuration so that portions 3<SP>1</SP> magnetically separate adjacent drive lines 2<SP>1</SP>. The foil and drive lines on each side of the coated wire are embedded in an insulating resin 4. In a modification (Fig. 2, not shown), the soft magnetic foil is flat and has parallel grooves to accommodate the drive lines. In another arrangement (Fig. 3, not shown), the drive lines are backed by a flat magnetic foil and separated by soft magnetic strips. Additional conductors may be arranged between the drive lines to subject the magnetic shielding elements to an alternating magnetic field, in which case the elements need not be of soft material. A single shielding element may extend over the whole of a storage plane or a separate element may be provided at each intersection of a coated wire and a driveline.
Patent GB-346116-A (GB)
Title: Process for the manufacture of white titanium pigments
IPC: C01G23/047
Filed: 1930-02-28
Abstract: Titanium oxide pigments, obtained by precipitation alone or with fillers such as calcium or barium sulphate, are freed from iron by washing first with cold water and then with dilute sulphuric or other acid at 50-60 DEG  C.  Reducing agents may be added during the acid treatment.  The pigments are finally washed with cold water.
Patent GB-1023773-A (GB)
Title: Improvements in or relating to electric thermal storage space heaters
Inventor: LANE RICHARD JOHN
IPC: F24H9/20
Filed: 1964-02-19
Abstract: 1,023,773. Electric thermal storage heaters. GENERAL ELECTRIC CO. Ltd. Feb. 19, 1965 [Feb. 19, 1964], No. 6927/64. Heading F4U. In an electric space heater having an air inlet 1 and air outlet 2, cooling air is mixed with air which has abstracted heat from the heat storage mass 5, the temperature of which controls by a thermostat 12 a valve 6 in a partition 3, allowing cool air from the inlet passage 1 to by-pass the mass 5. As shown, the valve is hinged to the partition below an orifice 4 and operated by a lever 17, 18 contacted to the free end 15 of a bi-metallic strip 12 fixed in a recess 9 in the mass 5. The strip 12 may be in the form of a helix so that the free end 15 is rotated to open the by-pass valve 6 as the temperature of the mass increases, to keep the issuing air at a constant temperature.
Patent GB-1022565-A (GB)
Title: Copolymers
Inventor: WILSON WALTER
IPC: C08G2/00
Filed: 1961-03-07
Abstract: Trioxan and aliphatic or alicyclic unsaturated hydrocarbons are copolymerized under anhydrous conditions in the presence of electrophilic catalysts.  Specified hydrocarbons are butadiene, isoprene, pentadiene-1 : 3, isobutene, heptene-1, octene-1, beta-ponene, cyclohexene and 4-vinyl cyclohexene.  A third comonomer may be present-specified are the cyclic ethers of Specification 903,668, allyl ethers and esters, compounds containing at least one isocyanate group and compounds containing at least one nitrile group-lists are given.  Specified catalysts are metal and metalloidal fluorides, chlorides and bromides, their complexes with water and with organic compounds in which the donor atom is oxygen or sulphur, non-oxidizing inorganic acids and their complexes with boron trifluoride, complexes of boron trifluoride with weakly basic nitrogen compounds, halogens and interhalogen compounds and oxonium salts.  The reaction preferably takes place in an inert medium at between - 100 DEG  and 100 DEG  C., continuously or by continuous or intermittent addition of reactants.  The product may be stabilized by reaction with acid anhydrides and isocyanates or by addition of antioxidants, e.g. aromatic amines, substituted benzophenones, hydrazines, ureas, thioureas, polyamides, polyurethanes, polyureas, polyacrylamides and polypeptides.  The matter claimed in Specifications 998,479, 1,002,761 and 1,009,882 is disclaimed.
Patent GB-140074-A (GB)
Title: An electro-magnetic device for re-magnetizing permanent magnets
IPC: H01F13/00
Filed: 1920-03-08
Abstract: 140,074. Foehl, G. A., (Assignee of Porter, J. L.). March 20, 1918, [Convention date]. Electro-magnets.-An electro-magnetic device for re-magnetizing the permanent magnets of a Ford magneto comprises an equal number of parallel cores 3 formed integral with a ring 2 mounted within a box 1. The coils 5 on the cores 3 en each half of the ring are connected in series, adjacent coils being wound in opposite directions, and the two series of coils are connected in series or parallel depending upon the voltage of the supply mains to which the terminals 6, 7 are connected. Where the suppiy current is alternating, it is first rectified before being passed through the coils 5. The strength of the current is regulated by means of a rheostat 10. The fly-wheel and magnets of the Ford magneto may be removed from the vehicle and placed in contact with the ends of the cores 3, or the magnets may be remagnetized without removing them.
Patent GB-1148939-A (GB)
Title: Time delay relay
IPC: H01H37/10
Filed: 1967-02-14
Abstract: 1,148,939. Photo-electric lighting control; temperature responsive actuation elements. ELLENBERGER & POENSGEN G.m.b.H. Feb.14, 1967 [April 30, 1966], No. 7059/67. Heading G1A and G1D. A snap-action thermal switch with ambient temerature compensation comprises a coil-heated bimetallic element 8 Fig. 2 and a compensating bimetallic element 9 fiexd at one end in parallel relationship to a common pivotal mounting 5. The opposite end of the heated element 8 is adjustably fixed by engagement over a set screw 21 while the free end of the compensating element 9 is coupled to spring contact 14, 15 through a pivotal link 23 whereby the contact 15 is moved with snap-action between fixed contacts 16, 17. In modifications the heating current may pass through the bimetal element 8 to one end of the heating coil 11. In a further modification the heating coil 11 is protected from over-heating by a thermal cut-out switch in the heating circuit comprising a spring contact attached to the pivotal mounting 5 adapted to move away from a fixed contact on over-heating. In one example a photo-conductive cell 31 Fig. 13 in circuit with the heating coil 11 is used in switching street lights under control of daylight conditions. During daylight the resistance of the cell 31 is low and currents flows through the heating coil 11 and holds the switch 14, 17 in the lamp circuit in the "off" position.
Patent GB-755870-A (GB)
Title: Improvements in or relating to transistor circuits
IPC: H03F1/34
Filed: 1954-03-11
Abstract: 755,870. Transistor amplifying circuits. PHILIPS ELECTRICAL INDUSTRIES, Ltd. March 11, 1954 [March 14, 1953 ; July 18, 1935], No. 7115/54. Class 40 (6). In an amplifier in which the input is applied over a blocking capacitor to the base-emitter circuit and an impedance exhibiting a significant value at both D.C. and signal frequencies is arranged in the collector-emitter circuit, the lead between the base and capacitor is connected over an impedance to the collector in order to stabilize the working point. The signal 2, Fig. 1, is applied to the base-emitter circuit b, e over capacitor 3, the load 5 being arranged in the collector-emitter circuit c, e. By suitable choice of resistor 9, which may be temperature sensitive, tendencies for the collector current to vary due to effects such as temperature change are minimized by a corresponding change in the base-emitter bias conditions. Since resistor 9 introduces negative feedback, positive feedback may be employed in a cascade amplifier, Fig. 2 (not shown) to restore part of the gain. In a modification, Fig. 3, a tapping 17 is connected to earth over a capacitor 18 so that negative feedback at signal frequencies does not occur. An inductive load 21, Fig. 4, is supplied through a resistor 19 and capacitor 20, the relatively large resistor 19 being effective at D.C., but short-circuited at signal frequency by capacitor 20 when the load 21 is effective to give only a small amount of negative feedback. In a further modification, Fig. 5, the resistor 9 is connected to the " earthy " side of the signal source and does not therefore introduce negative feedback.
Patent GB-900447-A (GB)
Title: Cyanohydropyridine derivatives and process for their manufacture
IPC: C07D211/60
Filed: 1960-02-29
Abstract: The invention comprises otherwise unsubstituted 1-R-cyanohydropyridines and salts and quaternary derivatives thereof, in which the nitrile group is in the 3- or 4-position, and in which R represents a C1-7 aliphatic (including cycloaliphatic) hydrocarbon radical or a benzyl radical, R containing at least 3 carbon atoms when the cyano group is in the 3-position and the cyanohydropyridine is a 1,2,5,6-tetrahydro compound.  The above and other known compounds are prepared by reducing a cyanopyridine of the formula:- <FORM:0900447/IV (b)/1> in which the nitrile group is in the 3- or 4-position, R represents a C1-7 aliphatic (including cycloaliphatic) hydrocarbon radical or a benzyl radical and A- represents an anion, or a corresponding pseudo base of the formula:-  <FORM:0900447/IV (b)/2> with an alkali metal-earth metal hydride or alkali metal borohydride or a dithionite, and, if desired, further reducing a resulting hydropyridine with catalytically activated hydrogen under conditions which do not affect the cyano group (e.g. using a palladium catalyst), or with formic acid, and, if desired, rearranging a resulting 1 -R-3-cyano-1,4,5,6-tetrahydropyridine by treatment with a strong acid to form a 3,4,5,6-tetrahydro-pyridinium salt, which may be further hydrogenated under conditions which do not affect the cyano group to form a 1-R-3-cyanopiperidine.  The products are 1-R-3- or -4-cyanopiperidines or cyanohydropyridines of the formulae:-  <FORM:0900447/IV (b)/3> <FORM:0900447/IV (b)/4> <FORM:0900447/IV (b)/5> <FORM:0900447/IV (b)/6> <FORM:0900447/IV (b)/7> <FORM:0900447/IV (b)/8> <FORM:0900447/IV (b)/90> <FORM:0900447/IV (b)/101> The products may be subsequently quaternated with, for example, halides, sulphates and sulphonates, and further converted into hydroxides.  Alternatively, the products may be converted into acid-addition salts with hydrohalic, sulphuric, nitric, phosphoric, perchloric, carboxylic and sulphonic acids. Specification 900,448 is referred to.
Patent GB-1237357-A (GB)
Title: A method and apparatus to effect a connection with an object at the sea floor
Inventor: HEYNING GELDOLPH ADRIAAN
IPC: F16G11/10
Filed: 1969-02-10
Abstract: 1,237,357. Cable clamps. NEDERLANDSE MAATSCHAPPIJ VOOR WERKEN BUITENGAATS (NETHERLANDS OFFSHORE CO.) N.V., and BUREAU WIJSMULLER N.V. 4 Feb., 1970 [10 Feb., 1969], No. 7158/69. Heading F2X. A rope clamp is freely movable along a cable to a required position where it is clamped to the cable by the operation of a lever. The clamp is moved along the cable 15 by a hauling rope attached to the lever 7, at the eye 9. The clamp, formed of cheeks 1, 2 moves along 15 on the rollers 11, 12 and is fixed to 15 by the movement of 7 into the slotted position, when the friction plate 10, and guide 3 grip the cable 15.
Patent GB-676828-A (GB)
Title: Improvements in and relating to audio frequency amplifiers
IPC: H03F3/189
Filed: 1950-03-22
Abstract: 676,828. Valve amplifying circuits. BRITISH THOMSON-HOUSTON CO., Ltd. March 22, 1950 [March 31, 1949], No. 7170/50. Class 40 (vi). In a selective amplifier, particularly for audio frequencies, voltages are developed at two points in phase and in anti-phase with the applied signals. A series resistor-capacitor network is connected from the first point to a common point, while a parallel resistor-capacitor network is connected from the second point to the common point. A negative feed-back connection from the common point supplies a fraction of the potential in opposition to the input. An input signal is fed through amplifying valve 18 to a valve 1 having an anode load 7, 8 of twice the value of the cathode load 9. The anode and cathode feed a Wien bridge comprising resistors 12, 14, 26 and capacitors 11, 13. The output from the bridge is taken over blocking capacitor 22 and equal resistors 5, 17 to provide negative feed-back. Variable resistors 12, 14 may be ganged to allow change of frequencies and the capacitors 11, 13 may also be made variable. The in-phase and out-of-phase components may be derived from a transformer having a centre-tapped secondary. Specification 497,148 is referred to.
Patent GB-311861-A (GB)
Title: Improvements in box-ottomans and other box-like articles of furniture
IPC: A47C17/22
Filed: 1928-03-08
Abstract: 311,861. Greaves, F. A. March 8, 1928. Cabinets. - In a box-ottoman or other box-like article of furniture, of the kind provided with a pivoted garment-supporting element, the tray 4, which carries the garmentsupporting device 8, is pivoted to the rail 3 so that, when horizontal, the tray is contained wholly within the body of the box 1. This enables a flat bottomed lid 2 to be used. A pivoted stay may support the tray 4 in its raised position.
Patent GB-267315-A (GB)
Title: Improvements in carpet sweepers
IPC: A47L11/33
Filed: 1926-03-16
Abstract: 267,315. Entwisle & Kenyon, Ltd., and Kenyon, W.. H. March 16, 1926. Carpet-sweepers have a disc D larger in diameter than the brush stock applied to the brush' stock or neck adjacent the end of the casing, and preferably a cover E closing the brush aperture in the casing. The flat or dished disc D of rubber or metal revolves with the brush. The outer cover E may have a curved flange d to keep out hairs &c. and may have a plain or serrated edge.
Patent GB-117060-A (GB)
Title: Improved Manufacture of Soap Containing Sulphur.
Inventor: TANAKA TOMOICHIRO
IPC: C11D3/48
Filed: 1918-04-30
Abstract: 117,060. Tanaka, T. Aug. 1, 1917, [Convention date]. Soaps, materials and compositions for making.- A sulphur soap contains sodium perborate or other oxidizing-agent, to prevent the evolution of sulphuretted hydrogen. The composition described contains a neutral soda stock soap, made by saponifying a mixture of beef fat and palm oil, a neutral soda resin soap which has been melted and mixed with flowers of sulphur, and a mixture of 10 parts of sodium perborate and two parts of vaseline.
Patent GB-212123-A (GB)
Title: Improvements in centrifugal fans
IPC: F04D17/16
Filed: 1923-03-14
Abstract: 212,123. Melhuish, A. E., (American Blower Co.). March 14, 1923. Fans with annular discharge; casings.-In a centrifugal fan of the type having an open annular peripheral discharge nozzle as described in Specification 207,741 the nozzle is arranged to discharge at an angle substantially less than 90‹ to the axis of the rotor, or parallel to the axis. To a disc 3, Fig. 1, which is fixed to the hub 4, are attached blades 5 to the outer edges of which is secured a coned disc 1 having a flared intake 2. The discs 1, 3 converge beyond the blades as shown to form the nozzle portions 6<a>, 7<a>, beyond which a.re parallel curved portions 6b, 7<b> terminating in outwardly-flared lips 6<c>, 7<c> which give a backward axial discharge. In a modification, the nozzle is formed separately from the wheel and has a forward axial discharge. In a further modification, the fan-wheel comprises a front coned disc a, Fig. 4, blades c and a back-disc b having a coned portion b'. The discs a, b converge beyond the blades and terminate in a flared outlet a', b'.